Improved performance of LiMn2O4 cathode materials for lithium ion batteries by gold coating

被引：56

作者：

Tu, Jian ^{[1
]}

Zhao, Xin Bing ^{[1
]}

Cao, Gao Shao ^{[1
]}

Tu, Jiang Ping ^{[1
]}

Zhu, Tie Jun ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

MATERIALS LETTERS | 2006年 / 60卷 / 27期

关键词：

lithium manganese oxide; coating; cathode materials; electrochemical impedance spectroscopy; lithium ion battery;

D O I：

10.1016/j.matlet.2006.02.089

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spinel lithium manganese oxide has been synthesized by high temperature solid-state reaction, and coated with gold nano-film by ion sputtering method. The nano-film coated LiMn2O4 shows better electrochemical performance than the unmodified one. According to electrochemical impedance spectroscopy and energy dispersive X-ray analysis, the improvement of capacity retention is attributed to reduced contact area of electrode/electrolyte interface and suppressed dissolution of manganese during electrochemical cycling. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：3251 / 3254

页数：4

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